# score = 88
# if score >= 60:
#     print("考试及格!")


# score = 88
# if score >= 60:
#      print("考试及格!")
# else:
#     print("考试不及格!")


# score = 55
# if score >= 60:
#      print("考试及格!")
# else:
#     print("考试不及格!")


# score = 88
# if score >=85:
#     print("优秀")
# elif 75 <= score < 85:
#     print("良好")
# elif 60 <= score < 75:
#     print("中等")
# else:
#     print("差")


# year = 2020
# month = 2
# if month in [1, 3, 5, 7, 8, 10, 12]:
#     print("%d月有 31 天 " % month)
# elif month in [4, 6, 9, 11]:
#     print("%d月有 30 天 " % month)
# elif month == 2:
#     if year % 400 == 0 or year % 4 == 0 and year % 100 != 0:
#         print("%d年%d月有29天" % (year, month))
#     else:
#         print("%d年%d月有28天" % (year, month))


# i = 1
# result = 0
# while i <= 10:
#     result += i
#     i += 1
#     print(result)


# for word in "python":
#     print(word)


# for i in range(5):
#     print(i)


# i = 1
# while i < 6:
#     j = 0
#     while j < i:
#         print("*", end='')
#         j += 1
#     print()
#     i += 1


# for i in range(1, 6):
#     for j in range(i):
#         print("*", end='')
#     print()


